'Eighth note' definitions:

Definition of 'eighth note'

From: WordNet
noun
A musical note having the time value of an eighth of a whole note [syn: eighth note, quaver]

Definition of 'Eighth note'

From: GCIDE
  • Eighth \Eighth\ ([=a]tth), a. [AS. eahto[eth]a.]
  • 1. Next in order after the seventh. [1913 Webster]
  • 2. Consisting of one of eight equal divisions of a thing. [1913 Webster]
  • Eighth note (Mus.), the eighth part of a whole note, or semibreve; a quaver. [1913 Webster]